Ventilator.



A. W. OBERMANN.

VENTILATOR.

APPLICATION FILED FEB. 20, 1906. RENEWED FEB.

Patented Oct. 5, 1909.

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VENTILATOR.

APPLICATION FILED FEB. 20, 1906. RENEWED FEB. 25, 1909.

935,681. Patented Oct. 5, 1909.

2 SHEETS-SHEET 2.

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AUGUST W. OBERMANN, 0]? J OHNSTOWN, PENNSYLVANIA.

VENTILATOR.

Specification of Letters Patent.

Patentedoct. 5, 190a.

Application filed February 20, 1906, Serial No. 302,151. Renewed February 25, 1909. Serial No. 479,894.

To all whom it may concern:

Be it known that I, AUGUST W. OBER- MANN, a citizen of the United States of America, residing at J ohnstown, in the county of Gambria and State of Pennsylvania, have invented certain new and useful Improvements in Ventilators, of which the following is a specification, reference being had therein to the accompanying drawing. This invention relates to certain new and useful improvements in ventilators, and relates particularly to a ventilator applied in factories and shops containing pickling vats and the like, for, the purpose of carrying off the obnoxious gases emanating from the chemicals.

The present invention aims to successfully carry away all the poisonous matter that is detrimental to the health of workmen and others who are obliged to remain in buildings where dangerous chemicals are con tinually handled.

The present invention further aims to provide a ventilator of the above described character that will be extremely simple in construction, strong, durable, comparatively inexpensive to manufacture, and highly eflicient in its operation.

A still further object of my invention is to provide a ventilator that will successfully carry off the obnoxious odors from the chemicals during the operationof withdrawing the articles from the vat, and also carry off the gases during the chemical operation of pickling.

\Vith the above and many other objects in View, my invention consists in the novel: construction, combination and arrangement of parts to be hereinafter more fully de scribed and specifically pointed out in the claims. I

In describing the invention in detail, reference is had to the accompanying drawings forming a part of this application, and wherein like numerals of reference indicate like parts throughout the several views, in' which:

Figure 1, is a vertical sectional view of a building or factory having arranged therein my improved ventilator, the latter bein also shown in vertical section. Fig. 2, is a etail perspective view .of the hood, showin a ,ortion of the movable stack. Fig. 3, 1s a ragmentary vertical sectional view of a vat,

showing arranged therein a slatted recap tion.

tacle and also illustratinga section of the hood. Fig. 4, is a fragmentary view of a portion of the receptacle or basket formed of slats. Fig. 5 is a diagrammatic view illustrating three tanks having a common stack.

In these drawings, 1 represents a building, and 2 the roof thereof; within the latter is secured a stack 3 which is preferably formed of slats and carries a top or hood 4. Arranged within the upper portion of the stack 3 is a permanent stack 5, which is preferably square, or may be made round if desired; Between the upper end of the stack 5 and portion 3 of the stack, a space is formed as shown at 6, for the purpose ofcreating an additional draft. The portion 7 of the stack, which is suitably spaced therein by the space blocks 8 rigidly secured to the inner walls of the stack 5, permits the stack to be raised or lowered, and slide within the stack 5.

The sliding or movable portion of the stack 7 carries a hood 9, the. sides of which flare outwardly and carry a series of hinged doors 10, preferably one on each side of the hood, these doors extending downwardly and the front and rear door may be raised and rest upon the upper face of the hood when it is desired to gain access to the slatted basket 11, which is provided with doors 12, for the purpose of removing the ware or articles from the basket when the. latter have been raised to an elevated posi- The side doors of the hood have formed therein openings 14 through which extend the side rails 15 of the slatted basket, in order to engage the ends of the chains 16 which extend over pulleys l7 suitably journaled or secured in the building, and arranged upon each side of the stack. At

16 when it is desired to o erate the apsa- 'ratus. A door 20 is provi ed in the bee 9 in order to remove a single article of ware to test the same without disturbing the other articles contained in the basket, and bringing the latter to an elevated position.

The reference numeral 21 represents a vat the free ends of the chains 16, are secured or tank in which the slatted basket and wareis submerged, and 22 a faucet for fillin the tank with fluid.

he reference numeral 23 designates a steam pipe which is preferably arranged in the rear of the vat 21, this steam pipe projecting upwardly and controlled by a valve, not shown in the drawings, the function of said steam pipe or jet being to create an artificial draft during cold weather, for the purpose of assisting the natural draft which is created by the peculiar construction of the stack, as heretofore fully described.

The operation of my improved stack is as follows :'Ihe articles or ware are placed in the basket and submerged in the tank filled with chemicals, and all the odors arising from the chemicals will be successfully carried 0E through the stack by means of the natural draft created, first, under the hood, thence by the opening formed between the sections 7 and 8 of the stack, and again at a point near the upper portion of the stack. N hen it is desired to withdraw the articles or ware from the slatted basket, the chains 18 are operated, thereby lowering the counter weight 18, and raising the slatted basket, together with the hood 9 and movable section 7 of the stack. The doors 12 of the basket are then opened, and the ware withdrawn, after the doors 10 have been raised to gain access to the slatted basket.

It will be noted that various changes may be'made in the details of construction without departing from the general spirit of my invention.

Having fully described my invention,

what I claim and desire to secure by Letters Patent, is

1. In combination in a ventilator, a basket having side rails extended beyond its ends, a hood having openings in its'end walls to receive the extended ends of said side rails, a stack embodying a stationary section and a movable section, the latter secured to the hood and telescoping within the stationary 3. In a ventilator, a hood having side doors, and having a door in its top, the ends of said hood provided with'openings, rails extending through said openings, a stack communicating with the hood, the chains connected at their one end tos aid rails, pulleys, over which said chains travel, counterweights on the free ends of said chains, and connecting bars for securing the two strands of said chain together, substantially as described. v

In testimony whereof I affix my signature in the presence of two witnesses.

, AUGUST W. OBERMANN. Witnesses:

E. E. POTTER, M. E. Wnrrn. 

